Sticky-Sessions

At long last, the most oft-requested feature for EC2’s Elastic Load Balancer is here: session affinity, also known as “sticky sessions”. What is session affinity? Why is this feature in such high demand? How can it be used with existing applications? Let’s take a look at these questions. But first, let’s explore what a session is - then we’ll cover why we want it to be sticky, and what ELB’s sticky session limitations are. [To skip directly to an explanation of how to use ELB sticky sessions, go toward the bottom of the article.] ...